diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index e3e7625..5ab1da7 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -338,7 +338,7 @@ class Event(models.Model):
         verbose_name=_("Category"),
         help_text=_("Category of the event"),
         null=True,
-        default=Category.get_default_category_id(),
+        default=None,
         on_delete=models.SET_DEFAULT,
     )
 
@@ -1348,7 +1348,7 @@ class RecurrentImport(models.Model):
         Category,
         verbose_name=_("Category"),
         help_text=_("Category of each imported event"),
-        default=Category.get_default_category_id(),
+        default=None,
         on_delete=models.SET_DEFAULT,
     )
     defaultTags = ArrayField(